Sharpening device for slicing-machines.



I W. B. WOLFE & F.'M. SGHAEPER.

SHARPENING DEVICE FOR SLIGING MACHINES. APPLICATION FILED 1.111. 21, 1909.

986,617, Patented Mar. 14,1911.

' tremity the thumb nut G5 whereby pressure wheel and knife in contact; Fig. 3 is a de- UNITED s TA Es r trENT OFFICE.

wALLAcE B. WOLFE AND FRANK M. SCHAEFER, or CHICAGO, iLLINoIs, ASSIGNORS 'rof AMERICAN SLICING. MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION,

OF NEW YORK.

sHARrENme DEVICE FOR SILICING-MACHINES.

17 Specification of Letters Patent.

Application filed January 21, 1909. Serial No. 473,486.

T 0 all whom it may concern:

Be it known that we, WALLACE B. VVoLrr and FRANK M. SOHAEFER, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Sharpening Device for Slicing-Machines, of which the following is a specification.

Our invention relates to meat slicing machines and particularly to devices for automatically sharpening the knife.

It is illustrated in the accompanying drawings, wherein a Figure 1, is a horizontal section and part plan view in detail showlng the general relation of the grinding wheel to the knife Fig. 2 is a detail showing the grindlng 1 to throw the I the knife.

The grinding wheel may be applied to either side of the knife edge by pushing it either Way along with its supporting shaft against the action of one or the other of the springs F The manner in which it is usually in contact with the knife is illustrated in Fig. 2. .The pin G is provided at its lower end with the nut Gr on its screw threaded portion Or and thus the yoke may be tightened in position, but'if the nut G is loose the yoke with its pin may be turned about the axis of the pin and this movement may also be accomplished by operating the handle G. Thus the grinding wheel may be moved into any desired position as indicated by dotted lines in Fig. 3. The base piece G is provided with two enlarged aperturesG" G through which pass the securing screws Gr G These are adapted to enter into the casing or frame of the machine so that the device may be secured in proper position and in proper relation to the grinding wheel and the movable portion E of the guard. The base Gr can be adjusted in any desired position within reasonable limits by reason of the enlarged holes G. This is indicated in Fig. 3. I

The use and operation of our invention are as follows: When the operator desires to sharpen the knife the thumb nut Gr is then loosened and the handle is grasped and by means thereof the grinding wheel is thrown forward through the ,opening left in the guard rim by the removal of the lower portion thereof and the grinding wheel is or may be brought into contact with the knife; The wheel can be moved in either direction so as to throw it on either side of the knife and it is held elastically against the surface of the .knife on which it lies by grinding wheel toward or from tail showing the lateral adjustability of the grinding wheel, and Fig. 5 is a detail of the grinding wheel support.

Like parts are indicated by the same letter in all the figures.

F is a grinding wheel of any desired form or shape, preferably that shown, and adapt-- ed to engage the outer beveled edge of the knife '13. It is secured on a shaft F by means of the nuts F- F on opposite sides of the,grinding wheeL,

F F are boxes at the endof arms F F vwhich .rise from a yoke F These boxes furnish the bearings for the ends of the shaft F On opposite sides of the grinding wheel and between it and the sides of the boxes are the spiral springs F F whereby the wheel is elastically held in position. It can belmoved to either side of the cutting wheel with its shaft, the latter moving laterally in the boxes.

The yoke F terminates in a central pin G which is pivotally mounted in a block Gr which is in turn eccentrically mounted by means of the pin Gr in the arms Gr Gr which rises from the base piece G*. This pin is elliptical in shape'where it passes follow the inequalities and irregularities through the block G and has at one exalong the edge of the knife. The grinding wheel being rigid on its shaft and in contact may be applied to the arms G G to cause them to clamp the block G and hold it securely in position.

G is a handle projecting from the block and from the yoke whereby the block, yoke and grinding wheel may be swung on the pin G when the thumb nut is loosened l but yieldingly in position so that it rotates sufficiently to present an ever changing grinding surface to the knife but is of a different diameter and suificiently sluggish in its movement of rotation to effect the grinding or sharpening of the knife. If for Patented Mar. 14:, 1911.

means of the springs. Thus it is enabled to with the springs, is held somewhat securely any reason the knife is out of position with swung, as indicated in Fig. 4, on its vertical pendicular to said shaft.

reference to the Wheel, the latter may be supporting axis to bring it to the proper position. The grinding wheel may be locked in any desired position by means of the nut G or the thumb nut G We have not stopped to describe the operation of the meat supporting carriage because our invention is independentof the peculiarities of it or its operation.

1. .A sharpening device for slicing machines compi'ising a grinding wheel, a shaft upon which said wheel is mounted, a U- shaped support engaging both ends of said shaft and located upon either side of the wheel, and a base upon Which said support f is mounted so as to oscillate in a plane per- 2. A sharpcningdevice for slicing machines comprising a grinding wheel, a shaft upon which said wheel is mounted, a U- shaped support engaging both en s of said shaft and springs between said support and the Wheel.

3. A sharpening device for slicing machines comprising a grinding wheel, a shaft upon which said wheel is mounted, a U- sha ed support engaging both ends of said sha t, springs between said support andthe wheel, and a base upon which said support is mounted so as to oscillate in a plane perpendicular to said sha-ft.

WALLACE B. WOLFF: FRANK M. SGHAEFER.

'Witnesses EDNA K. REYNOLDS, MINNIE LINDENAU. 

